In my previous post on building an amp from a tin, I illustrated how to use wire mesh as a speaker grille. That mesh was a guard on rotating equipment in a prior life. Here are two more ideas for obtaining material to use as a grille in that previous project.
Both of these ideas came from a microwave I deconstructed today. The first one was actually the bottom of the machine where the air vents were located. The second was obtained from the deconstructed filters. The important thing is to keep an open mind when looking to repurpose old stuff. Sometimes we toss stuff in the trash too quickly because we fail to see the value that remains!!